baber/WOPTO huggingface dataset:
Patent GB-249840-A (GB)
IPC: E04G23/02
Filed: 1926-03-09
Abstract: 249,840. Leicknam, G. March 28, 1925, [Convention date]. Direct liquid pressure apparatus. - Cracks, crevices, fissures, and the like in buildings or foundations are filled with cement, concrete, or the like by means of a fluid piston in contact with the material to be injected the pressure being given by a mechanical piston direct, or by a pump piston, or by means of air or explosive pressure acting upon the water piston. The vessel A is filled with material while the cocks b and c are closed, and the vessel B is then filled with water or other liquid. The cocks are then opened and the piston p operated whereupon the water in B is pressed into the vessel A and acts as a liquid piston to eject the material into the fissure X. The piston p may operate a suction pump to obtain the necessary pressure or may be replaced by a water vessel C having pressure air inlet 0 to give the pressure. The gauge N indicates when the action is complete. For light materials the inlet and outlet to the chamber A are situated at the top thereof, while for heavy materials the inlet and outlet are at the bottom.
Patent GB-803314-A (GB)
Title: Improvements in snap action electric switches
IPC: H01H23/16
Filed: 1956-03-02
Abstract: 803,314. Snap-action switches. CLANG, Ltd., AUSTEN, H. E., and HARWOOD, C. D. Feb. 28, 1957 [March 2, 1956], No. 6619/56. Class 38 (5). A snap-action switch comprises a conducting contact-piece 9 which rests on a fixed contact-spring 11 and which is rocked by a cam 5 on a pivoted dolly 2 to make or break contact with a fixed contact - spring 20. The contact-piece 9 is positioned by integral trunnions which rest in grooves provided in the base moulding. A stop 24 is provided for the contact-piece 9 in the upper position and the upward thrust of the contact-spring 11 is augmented by a compression spring 12. The positions of the contact spring 20 and the stop 24 may be interchanged. Silver inserts 17, 23 are provided on the contact-piece 9 and co-operate with silver inserts 16, 22 and co-operate with silver inserts 16, 22 on the contact-springs 11 and 20, respectively. In another form, Fig. 2 (not shown), the stop 24 is replaced by a further contact-spring 26, thus forming a two-way switch. Equal contact pressure on the two springs 20, 26 is obtained in this form by off-setting the cam 5 from the centre line of the dolly or by positioning the lower spring 20 further away from the trunnions than the upper spring 26. In a further form of two-say switch, Fig. 4 (not shown), the contact-springs 20, 26 are arranged above and on opposite sides of the contact-piece. The manually-operated dolly shown in the Figures may be replaced by a rocking actuator of the type used in line cord or cord-operated ceiling switches.
Patent GB-292213-A (GB)
Title: An improved manufacture of activated carbons and decolorising charcoals
IPC: C01B31/08
Filed: 1927-03-10
Abstract: 292,213. Loon, J. van. March 10, 1927. Carbon and charcoal.-Active carbons or decolorizing charcoals are obtained by grinding carbonaceous material, e.g. wood charcoal, anthracite or bituminous coal, and used or unused decolorizing or active carbons, in the presence of a wetting agent such as water or benzol, the material and wetting agent being heated so that the grinding is effected at a raised temperature, the carbon being then separated. The grinding may be under pressure. A solvent . or a mixture of .solvents which will remove the tarry and other organic impurities and the inorganic substances in the material may be employed as wetting agent, e.g. alcohol, benzene, toluene, or dilute solution of inorganic acids, alkalis and salts. Consecutive quantities of solvent may be used. The grinching is continued until the particles are 9-2Á or less in size. The temperature is such that most of the impurities in the material are liquified. By employing autoclaves &c. and pressure, temperatures above the boiling point of the liquid may be used. In an example, linden wood charcoal is ground at 150- 180‹ C. in the presence of water in a rotating autoclave containing steel balls, the process taking about 10 hours. The carbon is then separated, washed if necessary, and dried.
Patent GB-526812-A (GB)
Title: Improvements relating to the reinforcement of concrete pipes and like hollow bodies
IPC: B28B21/56
Filed: 1939-03-01
Abstract: 526,812. Posts. STANTON IRONWORKS CO., Ltd., CORNELIUS, F. B., and DURO, N. March 1, 1939, No. 6724. [Class 20 (i)] [Also in Group XXVIII] A reinforcement for concrete pipes and other hollow bodies comprises rings f<SP>1</SP>, f<SP>2</SP> of different diameters, each ring being nested within the bends of sinuous longitudinal rods e. The extension of the reinforcement into the socket b is of a similar nature but is adjacent the outer wall of the socket only.
Patent GB-579045-A (GB)
Title: Improvements in means for controlling hydraulic brake systems for vehicles
IPC: B60T11/24
Filed: 1940-04-16
Abstract: 579,045. Vehicle brakes. RENAULT, L. April 16, 1940, No. 6869. Convention date, June 29, 1939. [Class 103 (i)] The piston 2, Fig. 1, of a master-cylinder 3 is operated directly by a rod 16 through the intermediary of a casing 4 containing a liquid placed under pressure by means of pedal 1. The pressure in casing 4 is communicated through a conduit 5 to a cylinder 6, Fig. 2, which produces engagement of clutch discs 7, 8 so that disc 7 is rotated, through the gearing shown, by a shaft 10 connected to the car wheels so that a cam 9 fast with disc 7 is rotated to turn a lever 14, connected to rod 16 and pivoted at 15, to apply an additional force to the brake piston 2. In the form shown in Fig. 1, the conduit 5 is made flexible to allow for the movement of cylinder 4, but in a modification this cylinder is provided with a second piston in order that the cylinder may be fixed. In Fig. 3 is shown a cylinder 20 by means of which cam 9 applies pressure to a further cylinder 23 for acting upon a pivoted rod 24 connected to rod 16.
Patent GB-454412-A (GB)
Title: Improvements in and relating to hinged ventilators of the hopper type
IPC: E06B7/06
Filed: 1936-03-09
Abstract: 454,412. Ventilators. MACKENZIE, K. D., c/o Braby & Co., Ltd. ,F., Petershill Road, and MARCHBANK, J., 165, Croftside Avenue, Croftfoot, both in Glasgow. March 9, 1936, No. 6969. [Class 137] A hinged ventilator of the hopper type comprises a sash 1 which is hinged to the bottom rail of a frame 2, between the frame and sash being arranged side. wings which are nested together when the sash is closed, and are extended to close the spaces at the sides when the sash is opened. Each collapsable side check includes an outer blade 3 secured to the frame, an inner blade 4 secured to the sash 1, and intermediate blades 5 all mounted on the same pivot pin 6. Co-operating pins 7 and slots 9 limit the movement of each blade and retain them in their appropriate positions.
Patent GB-593198-A (GB)
Title: Improvements in and relating to electric discharge tubes
IPC: H01J61/067
Filed: 1945-03-20
Abstract: 593,198. Discharge lamps. PHILIPS LAMPS, Ltd. March 20, 1945, No. 7007. Convention date, March 24, 1944. [Class 39 (i)] An electrode for a gaseous discharge tube, particularly a fluorescent tube, comprises a tungsten-molybdenum double-coiled helix 16 bound on a core 18 of refractory material such as aluminium oxide or magnesium oxide for heating a non-oxidizing cylindrical nickel sleeve 20 coated with a layer 24 of electron-emitting material, said sleeve 20 being supported by the strip 22 welded to the lead-in wire 12 to one of the ends 161 of the helix 16 and a metallic plate 26 supported by the rod 28 spot-welded to the lead-in wire 14 to the other end 16<1> of the helix 16, said metallic plate extending along and being separated from said nickel sleeve to partially shield the electron-emitting material 24 from ion bombardment by the other electrode of the tube. The nickel sleeve 20 and the shielding plate 26 form a pair of anti-anodes between which an electron discharge occurs due to the slight potential difference between the extremities 16<1> of the helix 16, this discharge starting the ionization of the gas filling in the fluorescent tube.
Patent GB-181093-A (GB)
Title: Improvements in or relating to automatic emergency brake attachment
IPC: B60T7/20
Filed: 1921-03-03
Abstract: 181,093. Toms, A. March 3, 1921. Railway and like continuous chain; forcetransmitting mechanism.-An automatic brake, of the type in which the brake is actuated when a coupling between two trucks breaks, comprises a chain f which, when the trucks separate, pulls a rod c against the action of spring g and actuates the brake lever e. The brake is held in the " on " position by means of frictional gripping-devices b until these are released by the lever i. A branch of the chain f is led to the other end of the truck so that the brake may be operated from either end.
Patent GB-570328-A (GB)
Title: Improvements in windings for alternating current commutator machines
IPC: H02K27/02
Filed: 1942-05-22
Abstract: 570,328. Windings for dynamo-electric machines. AKT.-GES. BROWN, BOVERI, & CIE. May 22, 1942, No. 7016. Convention date, May 30, 1941. Drawings to Specification. [Class 35] In single and multi-phase A.C. commutator machines with multi-plex windings and a simplex auxiliary winding connected .in parallel to the commutator segments, all the coils of the multi-plex winding have the same winding pitch, and the auxiliary winding has a winding progression which is periodically backwards and forwards. For this purpose, the number of parallel circuits (n) and the number of commutator segments per slot (k) must be chosen so that they have no common divider. The winding pitch of the multiplex winding may be 100 per cent of the pole pitch or shorter.
Patent GB-731397-A (GB)
Title: Phenylaminopropanediols and their derivatives
Filed: 1953-03-13
Abstract: Aminopropanediols of the formula <FORM:0731397/IV (b)/1> where R1 is hydrogen or nitro and R2 is hydrogen or an aliphatic acyl group of 1-8 carbon atoms (optionally substituted by halogen) are prepared by reducing with sodium borohydride an acid chloride of the formula <FORM:0731397/IV (b)/2> where R3 and R4 are acyl groups as defined for R2, and hydrolysing the product to remove the group R4 and if desired the group R3 also.  The reduction step is preferably carried out in an inert organic solvent such as dioxane.  Partial hydrolysis may be effected with decinormal caustic soda and acetone at room temperature.  For complete hydrolysis 5 per cent hydrochloric acid can be used.  The starting materials can be of the erythro or threo form and may be optically active or racemic.  They are obtained from the corresponding acids by treatment with thionyl chloride or phosphorus pentachloride.  The products (R1=NO2, R2=H) can be converted into chloramphenicol as in Specification 718,580.  In the examples: (1) the acid chloride of (-)-threo - N - dichloracetyl - O - acetyl - p - nitrophenylserine is reduced to O-acetyl-chloramphenicol and the latter hydrolysed to chloramphenicol; (2) the acid chloride of racemic erythro - O : N - diacetyl - p - nitrophenylserine is reduced to 1-(p-nitrophenyl)-1-acetoxy - 2 - acetamido - 3 - propanol and the product hydrolysed to dl-erythro-1-(p-nitrophenyl) - 2 - amino - 1 : 3 - propanediol; (3) the acid chloride of (-)-threo-O : N-diacetylphenylserine is reduced to (-)-threo-1-phenyl-1-acetoxy - 2 - acetamido - 3 - propanol which can be either hydrolysed to (-)-threo-1-phenyl-2 - amino - 1 : 3 - propanediol or acylated, nitrated and hydrolysed to give (-)-threo-1-(p - nitrophenyl) - 2 - amino - 1 : 3 - propanediol.
Patent GB-398504-A (GB)
Title: Process for the manufacture of methylamine
IPC: C07C209/48
Filed: 1932-03-09
Abstract: Methylamines are produced by treating a gaseous mixture comprising hydrogen and hydrocyanic acid with a catalyst consisting of or comprising copper, zinc, cobalt, tin or silver or mixtures thereof, with or without one or more cyanides of alkali or alkaline earth metals, and carriers such as pumice, carborundum or kieselguhr may be employed.  The gases may be passed through copper, fireclay, silica or other tubes containing the catalyst, which may be heated electrically.  When mono-methylamine is mainly desired a large excess of hydrogen is used, such as 12-16 or more volumes of hydrogen to one of hydrocyanic acid, but less hydrogen is employed when di- or tri-methylamine are desired.  The reaction may be effected at 150-500 DEG  C. under ordinary reduced or increased pressure. Hydrogen may be passed through liquid hydrocyanic acid so as to produce a mixture containing 94 per cent of hydrogen which is then passed through a copper or other tube containing copper or pumice at 250-350 DEG  C. The reaction gases may be preheated.  In an example, hydrocyanic acid is sprayed into a stream of hydrogen at 100 DEG  C. and the mixture is passed into a reaction tube at 275-280 DEG  C. containing a catalyst produced by melting copper oxide and granulating to obtain cuprous oxide granules which are then reduced with hydrogen at 240-250 DEG  C.  Specification 398,502 is referred to.ALSO:Methylamines are produced by treating a gaseous mixture comprising hydrogen and hydrocyanic acid with a catalyst consisting of or comprising copper, zinc, cobalt, tin, or silver, or mixtures thereof, with or without one or more cyanides of alkali or alkaline-earth metals, and carriers such as pumice, carborundum, or kieselguhr may be employed.  The gases may be passed through copper, fireclay silica, or other tubes containing the catalyst, which may be heated electrically.  When monomethylamine is mainly desired, a large excess of hydrogen is used, such as 12-16 or more volumes of hydrogen to one of hydrocyanic acid, but less hydrogen is employed when di- or tri-methylamine are desired.  The reaction may be effected at 150-500 DEG  C. under ordinary reduced, or increased pressure. Hydrogen may be passed through liquid hydrocyanic acid so as to produce a mixture containing 94 per cent of hydrogen which is then passed through a copper or other tube containing copper or pumice at 250-350 DEG  C. The reaction gases may be preheated.  In an example hydrocyanic acid is sprayed into a stream of hydrogen at 100 DEG  C. and the mixture is passed into a reaction tube at 275-280 DEG  C. containing a catalyst produced by melting copper oxide and granulating to obtain cuprous oxide granules which are then reduced with hydrogen at 240-250 DEG  C.  Specification 398,502 is referred to.
Patent GB-1488413-A (GB)
Title: Combination absorbent dressing and flexible cooling devic
IPC: A61F13/02
Filed: 1975-02-20
Abstract: 1488413 Cooling dressings UNION CARBIDE CORP 20 Feb 1975 [13 March 1974] 7129/75 Heading A5R A combination absorbent dressing and flexible cooling device comprises: (a) dressing composed of a hydrophobic top sheet 17 for placement adjacent to the body having a plurality of valve-like openings therein (which as shown (Fig. 3) are rows of straight slits (18)) and having a system of dimples 19 disposed thereon, a liquid impermeable backing sheet 16, and an absorbent material 15 disposed between said top sheet and backing sheet; (b) a cooling device comprising a flexible packaging material 24 encompassing and sealing an insoluble cold retaining hydrophilic gel 25; and (c) an insulating material 26 covering said cooling device and said dressing composite.  There may also be provided an outer sheet 11 having two outer segments 12, 13 covered with adhesive for attaching the bandage to a patient and releasable cover strips 27 to protect the dressing prior to its application. The hydrophobic top sheet 17 may be of ethylene ethylacrylate film. The hydrophilic gel may be made from poly (ethylene oxide) or exemplified substituted derivatives thereof by insolubilising a solution of the polymer by irradiation, producing chemical cross-linking of the molecules.
Patent GB-1493327-A (GB)
Title: Resilient support elements
IPC: H04M1/02
Filed: 1975-02-20
Abstract: 1493327 Springs SIEMENS AG 20 Feb 1975 [21 March 1974] 7222/75 Heading F2S [Also in Divisions E2 and H4] In a resilient support element 17 used, for example, in a telephone set (Fig. 5), flexibility is provided between elongate finger portions 1a, 1b 1c of the upper part 1 and the lower part 2 of the support element, a thin integral zone 4 is provided between the portion 1b and the lower part 2 and serves as a hinge such that flexibility is provided between components secured to parts 1 and 2 and another component secured to portion 1b. Openings 7 are provided in the element 17 to provide increased flexibility between the portions. In the telephone set (Fig. 5) a resilient support element 17 acts as a support for the dial switch 14 and the roller meter 15 together with the use of known support elements 16. The support elements are positioned on support tongues 18 arranged on the lower part 13 of the housing and at their upper end accommodate support tongues 19 provided on the components to be supported. The assembly surface formed by the lower part 13 of the telephone housing accommodates a circuit board 21.
Patent GB-1465232-A (GB)
Title: Process for electrowinning copper
IPC: C22C11/00
Filed: 1975-02-21
Abstract: 1465232 Electrowinning copper KENNECOTT COPPER CORP 21 Feb 1975 [27 Feb 1974] 7295/75 Heading C7B Cu is electrowon from an aqueous H 2 SO 4  (e.g. 10 to 300 g/1) electrolyte containing dissolved Cu values (e.g. 0À5 to 60 g/1) using anodes of Pb alloy containing 0À025 to 0À10% Ca. The cathodes may be of stainless steel, Ti or electro-deposited Cu. A comparison Pb alloy anode is specified containing 5% Sb or 10% Sb and 0À4% As. A current density of 5 to 40 A.S.F. may be maintained. The electrolyte may be obtained from multi-step, leachsolvent, ammoniacal, extraction processes from Cu scrap and/or cement Cu.
Patent GB-568799-A (GB)
Title: Improvements in or relating to motorcycles
IPC: B62M25/00
Filed: 1943-05-08
Abstract: 568,799. Driving-gear ; crank-chambers. COVENTRY-EAGLE CYCLE & MOTOR CO., Ltd., and WOODMAN, A. C, May 8, 1943, No. 7315. [Class 7 (ii)] [Also in Group XXXI] A power and changespeed unit for motor cycles having the primary and secondary drives at opposite sides of the changespeed gear with the kickstarter spindle mounted separately from the primary gear-shaft, is characterised in that the. engine is of the two-stroke type with a built-up crankcase and the change-speed gear is controlled by means of a foot lever 26 mounted on a forwardlyextended longitudinal shaft 27 carrying the gear - operating forks. In the construction shown, the engine is of the two-cylinder, twostroke type with the cylinders 2 horizontal and the cylinder-head 3 at the forward end. In order to prevent distortion of the common cylinder wall 4, the induction ports 5 and two of the four transfer ports 6 are formed therein. The carburetter 7 is carried by the cylinderhead and is connected by a passage 8 with the induction ports 5. The crank-case is formed in three sections having paralleljoints containing the cylinder axes, (1) one outer section 12 is extended rearwardly to form one end of the gear-box 13 and carries a cover 14 enclosing the primary drive 15 and clutch 16 ; (2) the other outer section 17 is extended laterally to form a casing 18 for the fly-wheel 19 and dynamo 20 and has a support bracket 21 for the other end of the gear-box 13 ; and (3) the middle section 22 is itself divided in a plane parallel to the crank-shaft 11. The changespeed gear is at the rear of the engine and comprises a main-shaft 23 and a lay-shaft 24 (not shown) preferably above it. The clutch 16 and primary drive 15, from the engine are at one side and the final or secondary drive 25 at the other side of the cycle. The gear is controlled by a longitudinal rocking-shaft 27 having the gear lever 26 at its forward end, the gear control being preferably of the onestep type with the gear lever returned automatically to its normal position after each gear-change. The spindle 30 of the kickstarter is mounted independently of the gearshafts 23, 24 and its toothed sector 31 engages a pinion 32 on the main-shaft 23. The unit, when installed on the cycle, may be completely enclosed, except for the gear lever 26 and the kick-starter crank, in a housing in the cycle frame such as that described in Specification 560,328.
Patent GB-215899-A (GB)
Title: Improvements relating to magnetic blow-out devices for electric circuit interruptersand the like
IPC: H01H9/42
Filed: 1923-03-14
Abstract: 215,899. North, N. E., and Metropolitan-Vickers Electrical Co., Ltd. March 14, 1923. Arc-rupturing devices.-Magnetic blow-out devices for switches, circuit-breakers and contactors, of the kind in which the coil producing the blow-out, field is connected in the circuit of the arc, the terminals of the coil being connected to arcing segments on which the arc impinges, have ohmic resistance introduced into the circuit of the blow-out coil between the arcing segments. A number of arcing segments may be employed each connected to a part of the blow-out coil. As shown, diagrammatically, in Fig. 1, the contacts 1, 2 between which an arc is drawn on break have located near them two semicircular arcing segments 4, 5 between which the blow-out coil 8, which is wound round the core 9, is connected. The arc is drawn by an ordinary series blow-out coil on to the segments 4, 5 whereupon the blowout coil 8 is energized. The blow-out coil has a comparatively high resistance or is connected in series with an external resistance so that additional resistance will be inserted in the arc circuit thereby. In Fig. 2, six arcing segments are employed connected to sections of the blow-out coil 8, as shown. Ths arc is first drawn on to the two segments nearest the main contacts thereby energizing the central portion only of the coil, the blow-out action of which causes further distention of the arc so that it impinges on the central pair, whereupon further sections of the blow-out coil are introduced. Finally, the arc reaches the remote pair of segments and the whole coil is then in the arc circuit. By these means the ampere-turns in the blow-out coil may be kept constant notwithstanding the increasing resistance, in the arc circuit as the arc distends. The subdivided blow-out coil in this form may be wholly of high resistance metal or the central portion may be of copper and the outer portions of high resistance metal. The arrangement described is shown in Fig. 3 applied to a pneumatically-operated contactor switch 'having fixed contacts 2 with fixed arcing horn 14, rectilinearlymoving spring contacts 1 with arcing horns 13. The contacts are arranged within the arc shoot 15 in which the arc-excited blow-out device 3 is located. An ordinary series blow-out coil 17 is provided which may be concentric with the coil 8. The coil 8 instead of being located within the arcing segments may be in the position usually occupied by the coil 17 connections being arranged between the segments and the toppings of the coil. In this arrangment shown in Fig. 9, six arcing segments are built up, with intervening insulation, to form a conical structure the segments being connected to the toppings of the external blow-out coil 8.
Patent GB-1426866-A (GB)
Title: Continuous casting mould and feed tube
IPC: B22D11/045
Filed: 1972-02-17
Abstract: 1426866 Continuous casting DAVY INTERNATIONAL Ltd 19 Feb 1973 [17 Feb 1972] 7360/72 Heading B3F A feed tube 10 of graphite or cermet material has an end portion 9 whose outer surface abuts the inner surface of a recess 8 in a continuous casting mould 5 of metal, e.g. copper. Molten copper is supplied from a brick-lined metal tundish 1 to the tube 10, which is fitted in an alumina-based ring 12 at the tundish outlet 4 in the embodiment shown. The tube 10 is clamped to a mould jacket 6 by a bolted apertured plate 14. In another embodiment, an outer end portion of the feed tube is of reduced outer cross-section and fits into a part-frusto-conical fireclay body sealed to the tundish.